TY - JOUR AU - Jianwen Zhou AU - Yongkun Li TI - Existence and multiplicity of solutions for a class of damped vibration problems with impulsive effects JO - Annales Polonici Mathematici PY - 2011 SP - 87 EP - 98 VL - 100 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap100-1-8/ DO - 10.4064/ap100-1-8 LA - en ID - 10_4064_ap100_1_8 ER -